From share + wort? <span class="searchmatch">sharewort</span> (archaic) A plant (Tripolium pannonicum subsp. tripolium) native to Eurasia and Africa. “<span class="searchmatch">sharewort</span>”, in Webster’s Revised...
harrow + -est harrowest (archaic) second-person singular simple present indicative of harrow <span class="searchmatch">sharewort</span>...